Improvement in projectiles for ordnance



A. WRIGHT.

Projectiles for Ordnance.

UNITED STATES PATENT EEIGE.4

ABRAM VRIGHT, OF CLINTON, MASSACHUSETTS.

IMPROVEMENT IN PROJECTILES FOR ORDNANC.

Specication forming part of Letters Patent No. 147,216. dated February3, 1874; application filed December 17, 1873.

To all whom it may concern:

Be it known that I, ABEAM WRIGHT, of (llinton, in the county ofWorcester and State of Massachusetts, have invented certain new anduseful Improvements in Projectiles; and I do hereby declare that thefollowing is a full, clear, and exact description thereof, referencebeing had to the accompanying drawings and to the letters of referencemarked thereon, which form a part of this specification.

The nature of my invention consists in providing a projectile for heavyguns with two or more rollers or wheels in one or more of its sides,said rollers being arranged'one behind the other, and in a line parallelwith the longitudinal center of the projectile, as will be hereinaftermore fully set forth.

ln order to enable others skilled in the art to which my inventionappertains to make and use the same, I will now proceed to describe itsconstruction and operation, referring to the annexed drawing, in which-Figure 1 is a longitudinal section of a gun with a projectile having oneset of rollers 5 and Fig. 2 is a similar section, showing the projectilewith three sets of rollers.

A represents an elongated projectile, such as is ordinarily used inheavy guns. In the side of the projectile A are made two or morerecesses, for the reception of two or more rollers or wheels, c a, whichare so arranged as to project the least distance beyond the exteriorsurface of the projectile. The rollers may be arranged in a direct orindirect line with each other; but in either case each roller must beparallel with the longitudinal axis of the projectile. When theserollers are used only on one side of the projectile, this side should bethe under side when the projectile is inserted in the gun. The rollers(t a thus take the weight upon them as the projectile is forced out ofthe gun, thereby avoiding the friction which is always occasioned by theprojectile sliding out. It also prevents the so frequent plowing out ofthe bottom of the bore of the gun. Similar rollers or wheels may also bearranged in the projectile, to bear against the sides of the bore ofthegun, if desired, so as to still further reduce the friction.

I am aware that rollers or wheels have been arranged in the sides ofprojectiles at certain angles, for the purpose of twisting or revolvingthe proj ectilearound its longitudinal axis; and I do, therefore, notbroadly claim the attachment of rollers or wheels to projectiles as myinvention.

My invention has for its object to reduce the friction as the projectileis forced out of the gun; and to this end the rollers or wheels arearranged one behind the other, and on a line with the longitudinalcenter of the projectile.

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent, is

A projectile for heavy guns provided with two or more rollers or wheelsin one or more of its sides, and said rollers or wheels arranged in aline parallel with the longitudinal center of the projectile,substantially as and for the purpose specified.

In testimony that I claim the foregoing as my own I afx my signature inpresence of two witnesses.

ABRAM WRIGHT. Witnesses C. F. W. PARKHURST, J. B. BAKER.

